Polishing wheel



April 24, 1928.

D.-- F. MICGOVERN .POLISHING WHEEL Filed Oct. 1925 llllll [ill ll1l'llllMaw Patented Apr. 24, 1928.

DANIEL FREDERICK MCGOVERN, OF MONTPELIER, VERMONT.

POLISHING WHEEL.

Application filed October 16, 1925. Serial No. 82.868.

This invention relates to polishing wheels, and involves a novel flangearrangement and relation designed to insure uniform and adequatedistribution of the abrasive over the entire working face of the wheel.

The construction and operation of my wheel, together with a selectedembodiment thereof which well illustrates the principleslIlVOlVtKl'llIltl is itself a form found satislactory 1n use, 1sdescribed and shown in the accompanying specification and drawings,

and the characteristic features of novelty are particularl pointed outin the appended claims. Throughout the specification and drawings, likereference characters are corespondingly applied, and in the drawings:

Fig. l'is a face view of a polishin wheel in accordance with myinvention, ant

Fig. 2 is a side elevation thereof.

I have indicated generally at 1 the plate or disc of the polishingwheel, at 2 the central mud discharge opening thereof, and at 3 theattaching lugs which receive the driving shaft.

According to ,my invention the working face of the disc 1 is providedwith a plural ity of segmental flanges which, as here shown, arearranged in the form of four definite and distinct sector shaped flangesets,

indicated enerally by the reference characters A, la, C and I) in Fig.1, although obviously a greater or lesser number of flange sets may beused. These flange sets a re symmetrically distributed over the workingface of the wheel between intersecting diameters F-F and (}G, whichdiameters, in the embodiment herein illustrated, intersect each other atright angles.

The approximate centers A, B, C and D, respectively, of the individualflange sets are all eccentric to the axis of rotation of. the wheel, theflanges of each succeeding set being centered on a diameter intersectingthat on which the preceding set is centered, i. e.. the approximatecenter B of the flange set B, for example, is located substantially onthe diameter VV which is the vertical median line of the disc, and theapproximate center A of the preceding flange set A is locatedsubstantially on the intersecting diameter HH which is the horizontalmedian line of the disc. Where four flange sets are employed, theapproximate centers of substantiall oppositely disposed sets, as thecenters X and C for the sets A and G, are IOCated 0n the same diameterH--H and the it to the next succeeding set.

tended beyond the diameter on which the included flanges of said setterminates and therefore overla s the tail end of the outermost flangeof t 10 next preceding flange set so as to provide therewith a series ofabrasive inta (e openings 0 spaced equidistantly about the periphery ofthe disc. As here shown, the outermost flanges a, c of the flange setsA, C are extended beyond the diameter F-F and terminate at oppositesides of the disc on the horizontal median line HH, and the outermostflanges b, (l of the flange sets I3, D extend beyond the diameter G-Gand terminate at opposite sides of the disc on the vertical median lineV V. The eccentric centering of the individual flange sets brings theleading ends of the included flanges between the channels defined by theflanges of the preceding set so that the flanges do not track eachother. Preferably the tail ends of all thcflanges of a set terminate inthe same plane.

My arrangement and relation of flanges enables me to secure an adequateintake of abrasive, the wheel in the embodiment shown having fourequidistantly spaced abrasive intake openings about its periphery, and auniform distribution of such abrasive over the entire working face ofthe whcel,the outermost or leader flanges of each flange set drawing inand delivering the abrasive to the included flanges of each flange set,and the included flanges feeding the abrasive for their entire lengthand then delivering This action is continuous and progressive, and theabrasive isnot only thoroughly broken up in its passage towards thecenter of the wheel, but is uniformly distributed over the entireworking face of the wheel. The centrifugal force developed by therapidly rotating wheel returns the abrasive outwardly toward resorted towithin the spirit and scope ofmy invention as defined by the appendedclaims.

What I therefore claim and desire to secure by Letters Patent is:

1. A polishing wheel comprising a plate havin on its working face aplurality of sets 0 arcuate flanges disposed in symmetrically arrangedgroups lying between intersecting diameters of the plate, each flangeset being centered on a diameter intersecting that of the precedingflange set, the leading ends of the outermost flanges of a pair ofsubstantially oppositely disposed flange sets starting at substantiallythe horizontal or vertical median line of the plate and in advance ofthe tail ends of the flanges of the next preceding flan 'e' set.

2. A polishing wheel comprising a plate havin on its working face aplurality of sets 0 arcuate flanges disposed in symmetrically arrangedgroups lying between intersectln diameters of the plate, each' flangesetbemg centered on a diameter intersecting that of the preceding flangeset, the leading ends of the outermost flanges of a pair ofsubstantially oppositely disposed flange sets starting at substantiallythe horizontal or vertical median line of the plate and in advance ofthe tail ends of the flanges of the next preceding flange set, and thecenters of said oppositely disposed sets being located on the samediameter but on opposite sides of the center of the plate;

- In testimony whereof I aflix my signature.

DANIEL FREDERICK MCGOVERN.

